Gravitational effects in ultrahigh-energy string scattering

Details Gravitational effects in ultrahigh-energy string scattering Gravitational effects in ultrahigh-energy string scattering

2007-05-13

arxiv.org/abs/0705.1816v3

Phys.Rev.D77:046001,2008

Physics

High Energy Physics

High Energy Physics - Theory

19 pages, harvmac. v2: fixed typos, added refs and discussion of longitudinal spread. v3: minor changes to agree with publishe

Scientific paper

10.1103/PhysRevD.77.046001

Ultrahigh-energy string scattering is investigated to clarify the relative role of string and gravitational effects, and their possible contributions to nonlocal behavior. Different regimes can be characterized by varying the impact parameter at fixed energy. In the regime where momentum transfers reach the string scale, string effects appear subdominant to higher-loop gravitational processes, approximated via the eikonal. At smaller impact parameters, "diffractive" or "tidal" string excitation leads to processes dominated by highly excited strings. However, new evidence is presented that these excitation effects do not play a direct role in black hole formation, which corresponds to breakdown of gravitational perturbation theory and appears to dominate at sufficiently small impact parameters. The estimated amplitudes violate expected bounds on high-energy behavior for local theories.

Affiliated with

Also associated with

No associations

Rating

Gravitational effects in ultrahigh-energy string scattering does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Gravitational effects in ultrahigh-energy string scattering, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Gravitational effects in ultrahigh-energy string scattering will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-457941